AIU Database Job Satisfaction

Perform hypothesis testing on one variable's data. (Choose either intrinsic or extrinsic column). I chose the extrinsic Perform a t-test by formulating a null and an alternative statement, choosing an acceptable significance value, selecting the test statistic and determining its value from the sample data, comparing the observed value to the critical value obtained and determining whether to reject or fail to reject the null hypothesis.

In a separate paragraph, provide some information on when to use a t-test and when to use a z-test and why. Also, provide some information about why samples are used instead of populations.

Objective:
? Compute mean, median, mode for a set of data.
? Formulate null and alternative hypotheses for applications involving a single population mean, proportion, or variance.
? Use effective communication techniques